Hi, in case, you have word/line wrapping active while checking the spelling, you may try to disable it (if possible - it depends on the edited texts). I notuced, that with wordwrap on the spellcheck unterlines only works for rather small texts, after adding more text, the error highlighting gets incomplete and with larger texts the underlining disappears or it is displayed only for the beginning of the text. Generally with wordwrapping, some other functions are sometimes limited, maybe this is a similar case.
regards, vbr -- <https://forum.pspad.com/read.php?2,75507,75516> PSPad freeware editor https://www.pspad.com